Update 10:08 a.m. The local Daily News reports that the sinkhole opened up under the Skydome of the building. The dome is now closed, but the rest of the museum remains open.

Museum Executive Director Wendell Strode told the newspaper that this is the first incident of a sinkhole in their history. He said structural engineers from Western Kentucky University were on their way to assess the situation.

If you're wondering why a sinkhole might open up under the Corvette Museum, it's in the middle of the state's largest karst region, the AP reports. Karst means lots of underground caves (the museum is half an hour from Mammoth Cave National Park, the largest complex of caves in the world), and it means sinkholes.

Update 10:22 am. Emergency personnel allowed the museum staff to move the collection's 1983 Corvette out of the Skydome room, the Courier Journalreports. There weren't supposed to be any Corvettes for the 1983 year, so the one prototype in the Corvette Museum is the only one in existence.

According to the museum's communication manager, the nearby Corvette plant is fine and has no sinkholes of its own, the Courier Journal reports.

Update 10:54 am. Some 25 cars remain in the Skydome and structural engineers are trying to determine the best way to get them out, WDRB News reports.

Update 11:10 am. The Corvette Museum is now closed for the day, according to a statement from the museum itself. The museum went on to explain the nature of the collapse, first alerted to them by motion sensors.

None of the cars affected were on loan from individuals. The Skydome exhibit area of the Museum is a separate structure connected to the main Museum. A structural engineer is now on-site to assess the existing damage and stability of the surrounding areas. The Museum is closed to the public for the day to allow us to carefully assess the situation. We will keep everyone informed as we know more.

Update 11:30 am. This picture from Justin Hyde gives a sense of the width of the sinkhole within the Skydome room.